In fact, CBS, the US broadcaster, used it only as a summer replacement for Wanted: Dead or Alive and did not air even half of the run.
Airdate is for ATV London [1] ITV regions varied date and order.
Some books list episodes 3-1 to 3–10 as part of series 2 due to change of studio from 3–11.
These two episodes, which were shot in colour, were broadcast in the US as the European cinema movie version, Koroshi.
The show's abrupt cancellation, to make way for production and broadcast of star Patrick McGoohan's The Prisoner, resulted in these final two shows airing in the UK early in 1968, when they were broadcast as fill-in episodes for The Prisoner which had fallen behind the scheduled UK transmission dates, replacing advertised Prisoner episodes that were not yet ready for broadcast.